Without taking names, Mishra said Chaturvedi faced "interference" from assistant commissioners of police and deputy commissioners of police while recording the statement.

According to informed sources, Chaturvedi alleged that the senior officers at the hospital "tried to pressurise her to record the victim's statement as per their wish".

The sources said the magistrate accused police of putting pressure on her not to video record the statement of the 23-year-old woman, who December 16 gang-rape in a moving bus has triggered widespread criticism of the Delhi Police.

Dikshit, who forwarded the letter to the home minister, said: "I would suggest a high-level independent enquiry considering the officers involved.

"The contents of the letter are alarming and serious. Therefore I thought it will only be proper to bring the same to your notice for appropriate action," Dikshit said in her letter to the minister written on Monday.